live where everyone can control the elements: water, fire, air and earth, but there is one belief that there is an avatar who controls all the elements at once, Ryujin was a student she taught how to use fire, she concentrated and started trying to summon fire in her hand, but all to no avail, she tied her hair and started again, Ryujin had to teach this because she wanted to play a game where you have to use the element of fire to win, but she didn't expect that her opponent would be you